Appendix A
GPIB Basics
©
National Instruments Corporation
A-7
GPIB-120B User Manual
For high-speed operation, the following restrictions apply:
•
All devices in the system must be powered on.
•
Cable lengths must be as short as possible with up to a maximum of
15 m of cable for each system.
•
There must be at least one equivalent device load per meter of cable.
If you want to exceed these limitations, you can use a bus expander to
increase the number of device loads. You can order GPIB-120B bus
expanders from National Instruments.